CN1214634C - Voice communicatior with colour image device and host and sub-device used for same - Google Patents
Voice communicatior with colour image device and host and sub-device used for same Download PDFInfo
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- CN1214634C CN1214634C CNB021475202A CN02147520A CN1214634C CN 1214634 C CN1214634 C CN 1214634C CN B021475202 A CNB021475202 A CN B021475202A CN 02147520 A CN02147520 A CN 02147520A CN 1214634 C CN1214634 C CN 1214634C
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
- H04N7/186—Video door telephones
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
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- Closed-Circuit Television Systems (AREA)
Abstract
To attain a colored video display with a simple circuit configuration without making a frequency band width of an audio signal and a video signal narrow. Speech means 11, 31 use a hybrid transformer to send a slave set side base band audio signal from a slave set 10 to a master set 30 through transmission lines 2, 3 and to send a master set side base band audio signal from a master set 30 to a slave set 10 through the transmission lines 2, 3. A video image picked up by a color image pickup element 16 is given to a process circuit 17, in which the image is converted into a video signal c1 consisting of a luminance signal and a chrominance carrier signal of a base band, an FM modulation circuit 18 modulates the signal into an FM video signal d1 and it is demodulated into a video signal h1 consisting of a luminance signal and a chrominance carrier signal of a base band by an FM demodulation circuit 38 via an HPF 19, an adder 22, transmission lines 2, 3, a transmission line transformer and an HPF 39 and displayed on a color video display means 4 in a color video image.
Description
The present patent application is that application number is No. 97114149.5, and the applying date is 1997.10.24, and original name is called the dividing an application of patent application of " colour picture voice communicating system ".
Technical field
The present invention relates to carry out the voice communication assembly of the wounded color picture device that picture intelligence communicates by letter with voice signal.
Background technology
In the past, the image and voice communicator of known interphone that has monitor as the TV doorbell etc., remove and have by common transmission line, outside the audio communication function that between main frame and handset, can converse, also has the monitor Presentation Function that transmits the image of monitor demonstration from handset to main frame.Therefore, in having the interphone of monitor, for realizing that monitor shows, have the unit that videotapes in the handset side, have at the televimonitor of host computer side as image display apparatus, with the handset side to videotape the electrical signal conversion that the unit obtains be picture intelligence, transmit this picture intelligence by the two-wire line road direction host computer side that connects handset and main frame, make it to become the displayed image on the televimonitor of main frame.
In addition, voice signal also utilizes the transceiver that is located at handset side and host computer side can realize transmitted in both directions, can see image on one side become, Yi Bian with the structure of sound talk.In such structure, adopt the picture transmission specification transmission of standard or with independent transmission method transmission diagram picture signals and voice signal.Specifically, for example specially open that flat 2-50663 communique discloses, the baseband signal of picture intelligence and voice signal such as cut out the ripple modulation by the NTSC mode, are transmitted this modulation signal of main frame demodulation to main frame through modulating after.
In addition, in the monitoring arrangement that monitors outside pictures and sounds, also the baseband signal of picture intelligence and voice signal are undertaken transmitting to main frame after the carrier modulation by the NTSC mode, by the main frame demodulation.
But, in the device that adopts this carrier modulation, the modulation-demodulation circuit of voice signal or the modulation-demodulation circuit of picture intelligence must be arranged, the circuit complexity costs an arm and a leg.
Corresponding therewith, utilize bridge transformer to make the transmitting-receiving of the voice signal of base band become possibility, simultaneously, developing with centre frequency is the dispensing device of the carrier modulation black-and-white image signal about 4MHz.In this device, modulation-demodulation circuit is preferably the circuit that adopts the black-and-white image signal, because voice signal is dispensable, and has simple structure, makes low price become possibility.In addition, owing to can make the frequency height of picture intelligence, also has the so-called feature that helps to reduce to the voice signal influence than base band.
But, in recent years, in small sized monitor devices such as portable television receiver, adopt chromatic liquid crystal screen just becoming main flow, if in having the interphone of monitor, do not carry out colorize, concerning the user, just be difficult to stay deep impression so.
In the above-mentioned interphone that has monitor in the past, for the bandwidth that makes voice signal and picture intelligence does not narrow down, make low price become possibility, though utilizing bridge transformer that the transmitting-receiving of the voice signal of base band is become and developing in possible with centre frequency is the dispensing device of the carrier wave FM modulation black-and-white image signal about 4MHz, but in recent years, in small sized monitor devices such as portable television receiver, adopt the device of colored LCDs just becoming main flow, if in having the interphone of monitor, do not carry out colorize, concerning the user, just be difficult to stay deep impression so.
Open in clear No. 6143889 communiques (prior art example 1) etc. the spy and to have disclosed the TV door bell device.The image of this TV door bell device is a black and white, particularly under the natural daylight situation of low-light (level)s such as night or evening, as the illumination to irradiated body, can adopt the light-emitting diode (LED) of rubescent outside line.Owing to sensitivity is also arranged near infrared range, utilize it the subject of throwing light on to be videotaped enough near infrared rays as the CCD that videotapes the unit.Therefore, with the visitor as subject of near infrared ray illumination, owing to do not take notice of illumination, thus can the visitor there be the shooting of unplessantness displeasure, and LED has long advantage of low price life-span.Therefore, in this TV door bell device,, change in the foundation ambient conditions under the situation of subject illumination owing to the ultrared illumination from LED generally is certain, adjust by shutter controlled function, obtain the image of correct exposure with video camera.
In addition, open flat 1-243794 number the spy and wait the TV door bell device that has disclosed image colorization in the communique (prior art example 2).Under the environment such as night that are difficult to obtain the subject illumination, in order to solve in the color picture signal of natural color and the relatively lower colorrendering quality of color picture signal S/N of comparing night when subject illumination is low with the white print picture signals problem such as degenerate not of colour TV camera output under the situation about videotaping with the infrared radiation subject, under the environment of subject illumination step-down, this color TV door bell device cuts off the ugly color of subject automatically, switches to black-and-white image.
In addition, under the lower environment of the such subject illumination of above-mentioned prior art example 2, need not switch to black-and-white image to colour, the spy open flat 4-269090 communique (prior art example 3) even in disclosed the color TV door bell device that also can obtain common chromatic image night.The primary structure of this color TV door bell device comprises the indoor main frame that sets, be provided in the handset that main entrance etc. locates when being electrically connected with main frame by holding wire and be configured near this handset lighting device.
Have, the holding wire of connection main frame as described above and handset adopts a pair of parallel line (line in pairs) that discloses in the clear 62-257287 communique (prior art example 4) such as opening the spy again.Therefore, have only the color picture signal that is made of carrier chrominance signal and luminance signal and voice signal are transferred to structure on so a pair of parallel wire.
In addition, open the difference that has disclosed indeterminate colour or black-and-white image in the clear 61-167292 communique (prior art example 5), under the low situation of subject illumination at night, on handset, set the TV door bell device of the structure of primary illumination partial illumination the spy.
But as prior art example 2, be example with the TV door bell device that uses colored CCD, this image is being carried out under the situation of colorize, when subject illumination such as night are low, if utilize the near infrared light illumination subject by the light-emitting diode irradiation, its image will become complete factitious color.And except that near infrared light, if sneak into the such outer light illumination subject of natural daylight, the image that takes out with above-mentioned colour picture monitor becomes the problem that is not difficult for seeing image naturally with regard to existing to be called.
In addition, as prior art example 3, near auxiliary tone lighting device handset, even also can obtain night in the color TV door bell device of chromatic image, lighting device and handset split, existence must be constructed to both during to the construction of main entrance etc., and must carry out the problem of the application properties such as power supply wiring of lighting device.
Therefore, the objective of the invention is to: image and voice communication system, image and voice communicator that the ball bearing made using that narrows down with the bandwidth that does not make voice signal and picture intelligence carries out the colorize that image shows are provided, are used for the handset of image and voice communicator and are used for the main frame of image and voice communicator.
Have again, the objective of the invention is to: be provided as the illumination subject can set visible emitting in the handset main body miniature light sources, suppress handset and maximize, simultaneously, even also can obtain the color TV doorbell handset and the color TV door bell device of distinct chromatic image at night.
Summary of the invention
The handset of the voice communication assembly of the wounded color picture device of the present invention's the 1st scheme comprises: the handset main body; Solid videotapes the unit, is provided in the handset main body, and the picture intelligence of opto-electronic conversion is carried out in output; Image signal processing apparatus, output carry out the vision signal that obtained after the signal processing to the picture intelligence that videotapes unit output from solid; Audio-signal processing apparatus, it is provided in the handset main body, and output is as the sound of voice signal; With small-sized white light source, it is provided in the handset main body, uses the white-light illuminating subject.
The voice communication assembly of the wounded color picture device of the present invention's the 2nd scheme comprises: the handset that is used for the colour picture voice communicating device, wherein said handset comprises the handset main body, solid videotapes the unit, be provided in the handset main body, the picture intelligence of opto-electronic conversion is carried out in output, image signal processing apparatus, the vision signal that obtained after the signal processing is carried out in output to the picture intelligence that videotapes unit output from solid, audio-signal processing apparatus, it is provided in the handset main body, output is as the sound and the small-sized white light source of voice signal, it is provided in the handset main body, uses the white-light illuminating subject; The main frame that is used for the colour picture voice communicating device, it has the colour picture monitor and output loud speaker from the voice signal of audio-signal processing apparatus output of demonstration from the vision signal of image signal processing apparatus output; And transmission line, main frame and handset that it is used for the colour picture voice communicating device are electrically connected.
Description of drawings
Fig. 1 is the block diagram of the image and voice communication system of the expression embodiment of the invention.
Fig. 2 is the perspective view of the color TV door bell device of expression one embodiment of the invention.
Fig. 3 is the block diagram of the color TV door bell device of expression one embodiment of the invention.
Fig. 4 represents the spectral pattern of CdS transducer.
Fig. 5 is the resistance value of expression CdS transducer and the performance plot of illumination relation.
Fig. 6 is the front view of supervision imaging device that expression is used for the image and voice communication system of Fig. 1.
Fig. 7 is the spectral distribution graph of expression White LED.
Fig. 8 is the spectral distribution graph of expression incandescent lamp (incandescent lamp of Toshiba's illumination corporate system).
Fig. 9 is the spectral distribution graph of expression fluorescent lamp (the メ ロ ウ 5N of Toshiba's illumination corporate system).
Embodiment
Below, with reference to the description of drawings embodiments of the invention.
Fig. 1 is the block diagram of the image and voice communication system of the expression embodiment of the invention.
Among Fig. 1, image and voice communication system 1 useful two-wire system transmission line 2,3 connects the structure of handset 10 and main frame 30.Image and voice communication system 1 has the sound call function by two-wire system transmission line 2,3 two-way sound conversation between main frame 30 and handset 10, transmission from handset 10 to main frame 30 warbled color picture signals with have the supervision Presentation Function that shows as the supervision of chromatic image.Handset 10 and main frame 30 pie graph onomatopoeia sound/communication devices.
In addition, the transceiver 12 of the 1st communicator 11 of handset is furnished with microphone and loud speaker, and the voice signal a1 from this microphone is supplied with sound circuit 13.
Sound circuit 13 has bridge transformer, and voice signal a1 passes through an end from the intermediate point of this bridge transformer primary winding, guiding low pass filter 14 (being called LPF).LPF14 only has by being included in the frequency band near the frequency band (for example 20Hz to 20KHz in audible frequency zone) the sound frequency, by the voice signal a1 conducting adder 22 from sound circuit 13.Sound circuit 13 offers transceiver 12 to the main frame voice signal b1 described later that produces from the bridge transformer secondary coil, exports from its loud speaker.
Below, the function that videotapes of handset is described.Colored imaging device 15 videotapes the unit by colour and goes through with treatment circuit 17 and constitute.Colour videotapes unit 16 by formations such as lens and charge coupled cell (CCD) color image sensors, videotapes subject with colour, output RGB (RGB) tristimulus signal.Treatment circuit 17 is used to videotape from colour the tristimulus signal of unit 16, and the picture intelligence c1 that base band luminance signal and carrier-chrominance signal are constituted offers frequency modulation circuit 18 (below be called the FM modulation circuit).18 couples of picture intelligence c1 of FM modulation circuit frequency modulation(FM) is that the FM picture intelligence d1 at center makes high pass filter 19 (HPF) conducting with 1MHz.
HPF19 stops near the frequency band the sound frequency, by the FM picture intelligence d1 conducting adder 22 from FM modulation circuit 18.
A terminal 20 in a pair of input and output terminal of the lead-out terminal of adder 22 and handset 10 is connected.Another terminal 21 in the input and output terminal of handset 10 also is connected with reference potential point with when each circuit of handset is connected.Terminal 20,21 is connected with an end of transmission line 2,3 respectively.
Below, main frame 30 is described.
The 2nd communicator 31 that plays the main frame 30 of call function effect is made of transceiver 32 and sound circuit 33.
In addition, the transceiver 32 of the 2nd communicator 31 of main frame 30 is furnished with microphone and loud speaker, offers sound circuit 32 from the voice signal e1 of this microphone.
Sound circuit 33 has bridge transformer, and voice signal e1 leads to an end from the intermediate point of bridge transformer primary winding, conducting low pass filter 34 (being called LPF).LPF34 only has by being included in frequency band near the frequency band the sound frequency by the voice signal conducting tie point 35 from sound circuit 33.In addition, sound circuit 13 offers transceiver 32 to the handset voice signal f1 described later that produces from the bridge transformer secondary coil, exports from its loud speaker.
A terminal 40 in a pair of input and output terminal of the tie point 35 primary winding L1 by line transformer 50 and main frame 30 is connected.When the secondary coil L2 that the other end 41 in a pair of input and output terminal of main frame 30 passes through line transformer 50 is connected with each circuit of main frame 30, also be connected with reference potential point.Terminal 40,41 is connected with the other end of transmission line 2,3 respectively.By this connection, on tie point 35, but just conducting from the FM picture intelligence of handset 10 and the voice signal of base band.
Tie point 35 is connected with HPF 39.HPF 39 stops near the frequency band the sound frequency, stops the base band voice signal from handset 10, and the FM picture intelligence from handset 10 is offered as the FM demodulation circuit 38 by FM picture intelligence g1.38 pairs of FM picture intelligences of FM demodulation circuit g1 carries out demodulation, and conversion offers color image display device 42 by the picture intelligence h1 that the luminance signal and the carrier-chrominance signal of base band constitutes.
Color image display device 42 is by constituting such as chromatic liquid crystal screen, with COLOUR IMAGE VISUALIZATION OF HE picture intelligence h1.
Utilize this structure to constitute the voice signal emitter, it is located at handset 10 sides and main frame 30 sides to communicator 11,31, utilize bridge transformer, transmit the handset side voice signal of base band from handset 10 side direction main frames 30 sides that adopt transmission line 2,3, transmit the host computer side voice signal of base band simultaneously from main frame 30 side direction handsets 10 sides that adopt transmission line.
Below, the operation of the embodiment of the invention is described.
Colour videotapes three-colour image signal that unit 16 videotapes and is converted to the picture intelligence c1 that luminance signal and carrier-chrominance signal by base band constitute by treatment circuit 17, by FM modulation circuit 18, be modulated to FM picture intelligence d1, through HPF19, adder 22, transmission line 2,3, transmission lines transformer 50 and HPF39, by the picture intelligence h1 that the luminance signal and the carrier-chrominance signal of base band constitutes, carry out COLOUR IMAGE VISUALIZATION OF HE with FM demodulation circuit 38 demodulation with color image display device 42.
By the handset side voice signal a1 of the microphone input of the transceiver 12 of handset 10 a end from the intermediate point of the bridge transformer primary winding of sound circuit 13, through LPF 14, adder 22, transmission line 2,3, line transformer 50 and LPF34 offer the primary winding of the bridge transformer of sound circuit 33.Thus, from the secondary coil of the bridge transformer of sound circuit 33 the handset side voice signal f1 with handset side voice signal a1 identical content is offered transceiver 12, output is as the handset side voice signal f1 of sub-audible sound from its loud speaker.
By the host computer side voice signal e1 of the microphone input of the transceiver 32 of main frame 30 sides a end from the intermediate point of the bridge transformer primary winding of sound circuit 33, through LPF34, tie point 35, line transformer 50, transmission line 2,3 and LPF 14, offer the primary winding of the bridge transformer of sound circuit 13.Thus, from the secondary coil of the bridge transformer of sound circuit 13, the handset side voice signal b1 with host computer side voice signal e1 identical content is offered transceiver 12, output is as the host computer side voice signal b1 of sub-audible sound from its loud speaker.
In this operation, utilize the operation of HPF 19,39, do not increase the influence that produces by the base band voice signal in FM modulation circuit 18, FM demodulation circuit 38 on the one hand, and utilize the operation of HPF 19,39, do not increase the influence that produces by the FM picture intelligence in sound circuit 13,33.
Utilization is inserted through the simulation transmission lines of transmission lines transformer 50, even transmission line 2,3 has the short distance used like that (be the length of transmission line 2,3 as 7.5m about) in lumped constant circuit, but also make operation as the transmission line 2,3 of distribution constant circuit, stable frequency characteristics can be guaranteed, and the image degradation that the disorder because of frequency characteristic causes can be prevented.
If this is carried out specific description, wavelength at the FM picture intelligence that transmits with transmission line 2,3 is 30m, does not establish under the situation of line transformer 50 so, if the length of transmission line 2,3 reaches about the 7.5m of FM picture intelligence wavelength 1/4, will cause the disorder of resonance and frequency characteristic.Therefore, utilize line transformer 50 is set, make transmission line in fact elongated, prevent to resonate and prevent the disorder of frequency characteristic.
According to aforesaid embodiments of the invention, only the picture intelligence that luminance signal and carrier-chrominance signal by base band are constituted is launched with frequency modulation(FM), because handset side voice signal and host computer side voice signal baseband transmission, so can carry out the colorize that image shows with the simple circuit structure that the bandwidth that does not make voice signal and picture intelligence narrows down, can help not make a profound impression to the user not increasing under the manufacturing cost situation substantially.
Here, the image from prior art is shown that the system advantage that carries out colorize is illustrated.Carry out in the system such under the situation of transmitting-receiving communication of voice signal with CATV, for pressing FM emission sound, under the situation that the bidirectional transmit-receive of using main frame and handset is communicated by letter, FM demodulation circuit and FM modulation circuit must have two increases owing to FM demodulation circuit and FM modulation circuit respectively by item, will be than the manufacturing cost height of the embodiment of the invention shown in Figure 1.
Fig. 2 is the perspective view of the TV door bell device of the expression image and voice communication system that adopts Fig. 1.The TV door bell device is electrically connected with cable 3 between the two by constituting in the handset 1 of outdoor setting with at the main frame 2 of indoor setting.
Have, main frame 30 has the loud speaker of the colour picture monitor 30a that reflects visitor's image, output access person's sound and receives transceiver 30b that the pick-up of visitor's sound installs integratedly and the loud speaker of output calling tone again.
During the low-light (level) of natural daylights such as night, light LED 1f, the visitor is thrown light on.Colored CCD 1b videotapes the visitor who uses the visible light positive irradiation of shining from LED 1f.Have again, utilize the pick-up 30b of the loud speaker 1e of handset 1 and pick-up 1d, main frame 30, can carry out conversation without barrier with the visitor.In addition, if visitor's pressing button switch 1c will send calling tone from the loud speaker of main frame 30.
Here, the White LED that the Nichia Chemical Industries, Ltd that uses in the present embodiment is made summarily illustrates.The basic structure of this White LED is identical with the blue led of common InGaN, but scribbles thin fluorophor on the tube-surface of light emitting source.And, absorb repeatedly from blue light incident to fluorophor of this pipe emission, in fluorophor and scattering after, outwards radiation.At this moment, the blue light that absorbs in the fluorophor plays the effect of driving source, sends yellow fluorescence.And this gold-tinted and blue light become the white light that can see.Have, when the characteristic of this White LED was 25 ℃ of electric current 20mA, environment temperature, luminosity was 3cd again, and efficient is 5.01m/W, and colour temperature is 8000K.
Fig. 7 is the spectral distribution graph of White LED.In view of the above, luminous in the visible wavelength region of about 380nm to 800nm, particularly have show near the 450um of blue light and the 550nm of demonstration gold-tinted near the spectral characteristic of mild luminescence peak is arranged.
Fig. 8 is the spectral distribution graph of expression incandescent lamp (incandescent lamp of Toshiba's illumination corporate system).In view of the above, luminous in the visible wavelength region of about 400nm to 2000nm and Infrared wavelength zone, most energy is the energy in the Infrared wavelength emission.
Fig. 9 is the spectral distribution graph of expression fluorescent lamp (the メ ロ ウ 5N of Toshiba's illumination corporate system).In view of the above, luminous in the visible wavelength region of about 400nm to 720nm, the spy is that the spectral characteristic of locating luminescence peak at ruddiness, green glow and blue light etc. is arranged in addition.
As mentioned above, be in the lower incandescent lamp of the visible wavelength region energy in Infrared wavelength zone, just be difficult for throwing light on fully subject, in addition, can not obtain the sufficient light of tone in major part.Have again, in the fluorescent lamp of the spectral characteristic that a plurality of luminescence peaks are arranged, about the easy luminescence peak therein of the tone of chromatic image.In this case, be necessary to adjust fluorescent lamp or picture intelligence treatment circuit etc.And, large-scale, situation at high price that the special firing circuit that continuous row fluorescent fixture is necessary exists
Therefore, for obtaining distinct chromatic image, the such continuous spectrum of natural daylight is best, and is luminous in the visible wavelength region of about 380nm to 800nm, and in addition, the White LED that the spectral characteristic of mild luminescence peak is arranged is the light source that is easy to be fit to this situation.
According to present embodiment, under night such low-light (level) situation, owing to use visible light that visitor's illumination is videotaped from LED 1f, so can check visitor's appearance with the picture that is easy to see.And, owing to can use the light source of the low life-span length of price,, and can suppress and reduce carrying cost so the device maintenance is easily resemble LED1fp.
Fig. 3 is the block diagram of the color TV door bell device of expression one embodiment of the present of invention.Among the figure, symbol B is the part that videotapes that obtains color picture signal B1, and it videotapes the visitor A as subject, has lens B2 to the reverberation optically focused of visitor A, is the incident light opto-electronic conversion with lens B2 optically focused the CCD 1b of color picture signal BI
Have, symbol C is an image signal processing apparatus again, and it carries out the vision signal C1 that various finish dealing with output white luminance signal and carrier chrominance signals constitute to the color picture signal that is obtained by CCD 1b in driven CCD 1b.Symbol D is the CdS transducer that detects visible light illumination.Symbol E is the judgment part, and whether the surrounding environment level of illumination that judgment basis CdS transducer D detects is lower than set point.Symbol 1f is the LED that sends visible light for illumination visitor A, and LED ignition control device F is according to the igniting of controlling this LED 1f from the ignition signal of judging part D.In addition, in audio-signal processing apparatus G, with the reception sound of the pick-up 1d output that sets in the handset main body 1a as voice signal G1.
Fig. 4 is the curve chart of expression CdS sensor light spectral property.According to this curve, the CdS sensor wavelength adopts has sensitivity in the visible region of 400nm to 700nm scope, but the infrared ray more than the 700nm is not had the wavelength of sensitivity.
Fig. 5 is the resistance value of expression CdS transducer and the performance plot of illumination relation.Illumination uprises if CdS transducer 3 has, its resistance value is with regard to the characteristic of step-down.Sequence number among the figure is represented the kind of CdS transducer 3.
Have again, following for solving in the present embodiment with such problem, carried out the improvement of exposure-control device.That is to say, environment is guaranteed under the situation of gradation reproduction of necessary colour picture monitor to transition under the complete high illumination under the low-light (level) around, because prior art is only carried out the control of automatic exposure, Manual exposure, even improve the sensitivity operation, if but have highlights in the colour picture monitor picture, automatic gain is adjusted circuit and is made the gain reduction so, becomes whole dark picture and sets.
In addition, on the contrary, carrying out under the darker situation of muting sensitivity operation whole image, automatic gain is adjusted circuit and is improved sensitivity, the problem that exists so-called highlights to waste.
So, in Manual exposure control device H shown in Figure 3, be provided with under the situation of when improving sensitivity, carrying out the Manual exposure operation, adjust circuit by increasing the described automatic gain of gain setting, when desensitization, carry out under the situation of Manual exposure operation, adjust the structure of circuit by reducing the described automatic gain of gain setting.
That is to say, at variable control automatic exposure control circuit, Manual exposure control circuit, when electronic shutter speed is carried out exposure settings in these control circuits, be furnished with automatic gain and adjust circuit, it begins automatic exposure, replaces these exposure control with Manual exposure operation utilization by the exposure settings of Manual exposure thereafter when CCD raises, obtain picture intelligence; Automatic gain is adjusted in the meaning of circuit, can limit disproportionate operation, can produce the bright picture intelligence of operator's expectation.
In addition, for obtaining the gradation reproduction under the low-light (level), prior art is being set gamma value under the lower high illumination, and white level becomes and is short of the deficiency that has so-called highlights to disperse slightly.
So configuration is provided with the CCD gamma camera of automatic exposure function, gamma value changeable, under low-light (level), under the situation that can not obtain sufficient picture intelligence level, can guarantee black side gradation reproduction with the gamma value of the same minimum of prior art.On the other hand, under situation about obtaining than the sufficient light quantity of maximum exposure state, utilization becomes by than value big relatively under the low-light (level) gamma value, because the linearity of the high level part of picture intelligence is improved, so can prevent the generation of white waste, obtain not have under the paramount illumination under the low-light (level) the good picture intelligence of black waste, white waste.
Fig. 6 is the front view of supervision imaging device that expression is used for the image and voice communication system of Fig. 1.
Among Fig. 6, in monitor camera main body 70, in the image pickup lens 71 of the colored imaging device 15 that is provided with Fig. 1, also be provided with the various circuit that transmit described FM picture intelligence by the transmission line on monitor 80 sides 2,3 as handset 1.
If be described in detail, monitor camera main body 70 is connected with monitor apparatus 80 by transmission line 2,3.At monitor camera main body 70 inner front upper side positions, be provided with image pickup lens 71.The front of image pickup lens 71 and the positive dustproof transparent panel 72 that is provided with on every side.Be provided with microphone 73 at monitor camera main body 70 front downsides
In monitor apparatus 80, be provided with demonstration and videotape the color image display device 81 of the FM picture intelligence of main body 70, the voice output 82 that carries out voice output with the voice signal that from the FM picture intelligence of monitor camera main body 70, separates described base band from supervision.
According to such structure, make the monitor camera device can be fit to the image and voice communication system of Fig. 1.
Have again, in embodiments of the invention shown in Figure 1, between transmission line and main frame internal circuit, insert line transformer, but also can be set in line transformer between one of them the internal circuit and described transmission line at least of handset or main frame as mimic transmission line.
According to aforesaid the 1st to the 5th scheme of the present invention, owing to carry out the colorize that image shows, can under the situation that not quite increases manufacturing cost, help to make the user to make a profound impression with the simple circuit structure that voice signal and picture intelligence bandwidth are narrowed down.
According to the 5th scheme, can prevent the image degradation that the disorder because of frequency characteristic causes, help to make the user to make a profound impression.
In the 6th scheme of the present invention, owing to the miniature light sources that adopts the visible emitting that can in the handset main body, set the illumination subject, so when suppressing the maximization of color TV doorbell handset, even also can access the chromatic image of distinctness at night.
In the 7th scheme of the present invention, increased the invention effect of the 1st scheme, utilize exposure control according to Manual exposure, on the meaning of automatic gain adjustment circuit, can limit disproportionate operation, can produce the bright picture intelligence of operator's expectation.
In the of the present invention the 8th and the 9th scheme, increased the invention effect of the 1st scheme, owing to make light diffusion, in the subject of can evenly throwing light on, can make such as visitor and feel that dazzling phenomenon is difficult for taking place as subject from light source radiation.
In the 1st scheme of the present invention, according to the invention effect of the 1st scheme, even under situations such as night, also can obtain distinct image by enough colour picture monitors.
Claims (5)
1. the handset of the voice communication assembly of a wounded color picture device is characterized in that, comprising:
The handset main body;
Solid videotapes the unit, is provided in the handset main body, and the picture intelligence of opto-electronic conversion is carried out in output;
Image signal processing apparatus, output carry out the vision signal that obtained after the signal processing to the picture intelligence that videotapes unit output from solid;
Audio-signal processing apparatus, it is provided in the handset main body, and output is as the sound of voice signal; With
Small-sized white light source, it is provided in the handset main body, uses the white-light illuminating subject.
2. the handset of the voice communication assembly of wounded color picture device as claimed in claim 1 is characterized in that, also comprises:
The Manual exposure control device, when having automatic gain adjustment circuit, under the situation of the Manual exposure operation that improves sensitivity, adjust circuit by increasing the described automatic gain of gain setting, under the situation of the Manual exposure operation of carrying out desensitization, adjust circuit by reducing the described automatic gain of gain setting.
3. the handset of the voice communication assembly of wounded color picture device as claimed in claim 1 is characterized in that, the direction of illumination the place ahead at small-sized white light source is equipped with the light disperser.
4. the handset of the voice communication assembly of wounded color picture device as claimed in claim 1 is characterized in that, small-sized white light source is a White LED.
5. the voice communication assembly of a wounded color picture device is characterized in that, comprising:
The handset that is used for the colour picture voice communicating device, wherein said handset comprises the handset main body; Solid videotapes the unit, is provided in the handset main body, and the picture intelligence of opto-electronic conversion is carried out in output; Image signal processing apparatus, output carry out the vision signal that obtained after the signal processing to the picture intelligence that videotapes unit output from solid; Audio-signal processing apparatus, it is provided in the handset main body, and output is as the sound of voice signal; With small-sized white light source, it is provided in the handset main body, uses the white-light illuminating subject;
The main frame that is used for the colour picture voice communicating device, it has the colour picture monitor and output loud speaker from the voice signal of audio-signal processing apparatus output of demonstration from the vision signal of image signal processing apparatus output; With
Transmission line, main frame and handset that it is used for the colour picture voice communicating device are electrically connected.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP282400/1996 | 1996-10-24 | ||
| JP8282400A JPH10136348A (en) | 1996-10-24 | 1996-10-24 | Video audio communication system, video audio communication equipment, slave set for video audio communication equipment, and master set for video audio communication equipment |
| JP7977697 | 1997-03-31 | ||
| JP79776/1997 | 1997-03-31 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97114149A Division CN1097395C (en) | 1996-10-24 | 1997-10-24 | Colour picture voice communicating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1481164A CN1481164A (en) | 2004-03-10 |
| CN1214634C true CN1214634C (en) | 2005-08-10 |
Family
ID=26420772
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021475202A Expired - Fee Related CN1214634C (en) | 1996-10-24 | 1997-10-24 | Voice communicatior with colour image device and host and sub-device used for same |
| CN97114149A Expired - Fee Related CN1097395C (en) | 1996-10-24 | 1997-10-24 | Colour picture voice communicating system |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97114149A Expired - Fee Related CN1097395C (en) | 1996-10-24 | 1997-10-24 | Colour picture voice communicating system |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100263840B1 (en) |
| CN (2) | CN1214634C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102413374A (en) * | 2006-08-18 | 2012-04-11 | 索尼株式会社 | Automatically reconfigurable multimedia system with interchangeable personality adapters |
| DE202010004647U1 (en) * | 2010-04-07 | 2011-08-23 | Gira Giersiepen Gmbh & Co. Kg | Mounting arrangement, in particular for home communication |
-
1997
- 1997-10-24 CN CNB021475202A patent/CN1214634C/en not_active Expired - Fee Related
- 1997-10-24 CN CN97114149A patent/CN1097395C/en not_active Expired - Fee Related
- 1997-10-24 KR KR1019970054715A patent/KR100263840B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CN1189742A (en) | 1998-08-05 |
| KR19980033132A (en) | 1998-07-25 |
| CN1481164A (en) | 2004-03-10 |
| CN1097395C (en) | 2002-12-25 |
| KR100263840B1 (en) | 2000-08-16 |
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